Our first rain, but as the kids are fond of reminding us, April showers bring pilgrims (through the transitive property–can you identify the transitive element?). And today’s April showers carried these trail pilgrims across our first state line on our pilgrimage to Katahdin. In these parts, apparently even the slugs carry backpacks. We spent a long time discussing other arithmetic properties. The kids’ favorite is the associative property: they like to point out that if we do 3 fewer miles today, and 3 more miles tomorrow, it all adds up to the same number of miles. We reply that if you always put those 3 miles off until tomorrow, you run into the problem of infinite series (which don’t always behave well with arithmetic properties). Like much of parenting, this goes completely over the kids’ heads and they go back to seeing how high they can get the puddles to splash with a running jump. Sometimes it feels like we’re living in a Calvin and Hobbes strip.